Rotary cutter.



PATENTED APR. 14, 1908.

G. A.'BAUER.

ROTARY CUTTER.

APPLICATION FILED APR. 9,1907.

-2 SHEETS-SHEET 1.

No. 884,556. PATENTBD APR. 14; 1908.

A. BAUER.

- ROTARY CUTTER. APIPLIOATION FILED APR. 9.1907- 2 SHEETS-SHEET 2.

UNITED. STATES PATENT OFFICE.

GUSTAV A. BAUER, or SPRINGFIELD, 01110.

ROTARY CUTTER.

Sptcification bt Letters Patent.

Patented April 14, 1908.

Application filed April 9, 1907. Serial No. 367,172.

The present invention relates to rotary cutters, and the object of the invention is to rovide a rotary cutter which will successy cut carpet and similar materials into strips, operating continuously and simulta- 15 neouslycutting a plurality of strips; to provide improved means for securing the cutters on the cutter shafts; and to provide means for adjusting the cutters on the shafts to maintain the same in proper cutting relation one to the other.

With these objects in view my inventionconsists-in certain novel features of construc: tion and in certain parts and combinations to be hereinafter described, and then more fully pointed out in the claims.

In the accompan drawings, Figure 1 is a front elevation o a rotary cutter embodying my invention; Fig. 2is a top planview of such. a cutter; Fig. 3 is a sectional view, taken on the line a: a of Fig. 2 and looking in the direction of the arrows; and Fig. 4 -1s a sectional view, taken-on the line y y of Fig. 2 and looking in the direction of the arrows.

, In these drawings '1 have illustrated the 35 preferred form of m invention, in which the cutters are mounte in a frame comprising a base portion 1 havin uprightend portions 2 and 3,"each of whic isrovided with two bearings 4, mounted one a ove the other and adapted to receive the ends of the shafts 5 and 6, which are rotatably mounted therein and are provided on one end with gears 7 and 8, meshing with each other. One of said gears, preferablyihedower gear-7 also meshes with a third gear 9' which is mounted on a stud shaftlO journaled in a bearing 11 formed in the upright endportion 3 .of the frame.

A drive wheel 12 is also mounted on the shaft 10 and serves to rotate the gear 9, and,

through this medium, the gears 7 and 8 and the cutter shafts upon which they are p ilpurfitedare rotated in opposite directions. e e

to the shaft and arerotatabl mountedin the end portions of the'frame, w ereby the rotaof one of the shafts, preferably the upper s aft- 5, are arranged eccentrically tion of the eccentric hearings will adjust the ulpper shaft toward or away from the lower s aft.

Upon each of-the cutter shafts 5 and 6 are mounted a plurahty of cutter disks 13.

These disks are mounted upon their respective shafts in such a manner as to ermit the same to be adjusted longitudina 1y of the shaft, but to be held against rotation rela- 5 tively thereto, thus causing the cutter disk and the shaft to rotate in unison. These cutters are spaced one from the other a distance'equal to the thickness of one of said cutters, all of said cutters being of the same thickness. The diameter of the cutters relatively-to the distance between the shafts 5 and 6 is such. as to cause the cutters of one shaft to overlap the cutters on the other shaft. and to extend between the adjacent cutters on the other shaft. The edges of the disks are left rough or undressed so as to provide a rough cutting edge at the edge of the periphery thereof; which not only cutsthe material in a more satisfactory manne'r'SO than does the smooth edged disk, but also serves to feed the material forward without the aid of special feed mechanism. These cutters may be secured u on the"shafts in any suitable manner, but prefer to provide each cutter with a hub ortion'or collar 14 which is rigidl secure to and preferably formed into a with the cutters 13, and is of a width shghtlg less than the width of the cutter. This hu ters with a bearing of sufficient width to hold the same in proper vertical position on their respective shafts. Each of thecutters are provided through the hub portion with a. recess extending longitudinal shaft and adapted to register with a similar recess formed in the shaft itself and extending longitudinally thereof. A single key 15 is fitted into these recesses. and serves to retain the cutters against rotary movement relatively to the shaft, but to allow the-same to be adjusted longitudinally thereof. In order to retain the cutters in their adjusted position, a suitable locking means is provided near one end of the shaft. In .the present instance, the cutter lying nearest the end of the shaft is screw-threaded to form a nut adapted to engage the screw threads in the end of the shaft and form a locking nut 16. Preferably, the outer end of the hub 110 portion is extended, as shown at 17, to afford adequate means for actuating the nut.

portion provides the cuty of the cutter may eac of the shaft, thus bringing the cutting edges The operation of the device will be obvious from the foregoing description. Throu h the medium of the drive wheel 12 and t e pinions 9, 7 and 8 the cutter shafts are rotated in opposite directions. The arrangement of the cutters on their respective shafts so that they overlap each other is such asto p.rovide at their points of intersection a cutting edge ada ted to give a shearing cut on the material wliich is fed to the disks, and, the edges of the cutting disks being rough, the cutting action is further increased. When the disks become worn so that the cutting edgesof the adjacent disks are so far separated as to diminish their cutting effect, they be adjusted one to the other by slipping successive cutter toward the same end again into proper relation one with the other, this adjustment being permitted by making the collarswhich lie between the adjacent cutters of less thickness than tlie cutters;

' The nut 16 is then tightened down to lock the cutters in their adjusted position. Thus, it'will be seen that l have provided a rotary .cutter of this character which provides at the intersecting edges. of the 'disks a roughshearing out which is adapted to readily .sever such fabrics as carpet and the like;

and further, that I have provided adequate 7 means for adjusting the cutters relatlvely vious modifications will occur to a one to the other for maintaining the same in proper cutting relation one to the other,

plurality. of cutter disks mounted on each of said shafts, the disks on one shaft extending between the adjacent disks on the other shaft, and each of said disks comin in contact with both of said adjacent disks, hubs carried by said disks for maintaining the same in proper osition upon their respective shafts, said dis s being adjustable on their shafts to maintain the disks on one shaft in proper cutting relation to the disks on the other shaft, and means for adjusting-saiddisks.

2. A device of the character described comprising a pair of parallel rotary shafts, a plurality of cutter disks mounted on'each of said shafts and adapted to slide longitudinally thereof and to rotate in unison therewith, the disks on one shaft extendin between the adjacent disks on the others aft, hub portions formed integral with said. outter disks, said hub portions being ofRless width than said cutter disks, and means for adjusting said cutter disks longitudinally of said shafts.

3. A device of the character described comprising a pair of parallel rotary shafts each having a screw-threaded portion, a plurality of cutter disks mounted on each of said shafts and adapted to be adjusted longitudinally thereof and to rotate in unison there with, the disks on one shaft extendin betweenthe adjacent disks on theother s aft,

one of said disks being screw-threaded to en-' gage /with thescrew-threaded end of said shaft to lock said other disks in their adjusted posi' on. 1

LILA'device of the character described c'om rising a pair of parallel rotary shaftseach \having a groove formed therein and'extending longitudinally thereof, a plurality of cutter-disks mounted on each of said shafts and each provided with a groove adapted to register with the groove in their respective shafts, a single key for each of said shafts adapted to engage the groove therein and the grooves of the several cutter disks mounted thereon, a single cutter disk mounted on each of said shafts beyond the end of said key and means carried by said single cutter dis for locking said cutter disks in their adjusted positions on said shaft.

5. A device of the character described comprising a pair of parallel rotary shafts, a

plurality of cutter disks mounted on each of said shafts an *having their peripheries rough to form a rough cutting edge on each side of said disks, the disks on one shaft extendin between the adjacent disks on the others aft, and means for adjusting the disks on one shaft relatively one to the other to maintainthe same in 'roper relation with the disks on the other sliaft'.

In testimony whereof, I affix my signature in presence of two witnesses.

GUSTAV AfBAUER.

Witnzsses: i I C. LINK EDWARD L. 

